TY - RPRT TI - Bed topography inferred from airborne radio-echo sounding of Columbia Glacier, Alaska AU - C. S. Brown AU - Lowell A. Rasmussen AU - M. F. Meier PY - 1986 DO - 10.3133/pp1258g UR - https://pubs.usgs.gov/publication/pp1258G ID - pp1258G ER -